Abstract
In this paper, a novel image-based concept for estimating solar irradiance received on a photovoltaic (PV) array under normal conditions of irradiance is proposed. The approach is based on the variation of colors intensity in the images of the PV array with respect to solar irradiance. The images of the PV array, which are taken using fixed standard camera and undergo appropriate processing (filtering and intensity averaging), allow the approximation of the instantaneous solar irradiance. The effectiveness of the proposed approach is supported by series of outdoor experimental tests. The results demonstrate that the proposed approach has a good accuracy. As a direct application of the proposed concept, the instantaneous P-V curve of the PV array is approximated using analytical model of the PV array, measured temperature and the estimated irradiance. Once the P-V curve is available, the Maximum Power Point (MPP) can be easily located in real time and then the operating point of the system can be maintained at the MPP.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
